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September 5, 2015

Homework Help: Pre-Algebra

Posted by mysterychicken on Tuesday, May 26, 2009 at 11:29am.

Can someone help me with this one-

Quadrilaterals are a special type of polygon because _______________.

A. they always have exactly four sides
B. the sum of their interior angles always measures 180
C. they always have opposite sides that are parallel
D. they are always concave

Thanks
-MC

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